[FastAPI] Add fix safety section to FAST002

[MeGaGiGaGon]

Summary

Part of #15584

This PR adds a fix safety section to fast-api-non-annotated-dependency (FAST002). It also re-words the availability section since I found it confusing.

The lint/fix was added in #11579 as always unsafe.
No reasoning is given in the original PR/code as to why this was chosen.
Example of why the fix is unsafe:
https://play.ruff.rs/3bd0566e-1ef6-4cec-ae34-3b07cd308155

from fastapi import Depends, FastAPI, Query

app = FastAPI()

# Fix will remove the parameter default value
@app.get("/items/")
async def read_items(commons: dict = Depends(common_parameters)):
    return commons

# Fix will delete comment and change default parameter value
@app.get("/items/")
async def read_items_1(q: str = Query(  # This comment will be deleted
    default="rick")):
    return q

After fixing both instances of FAST002:

from fastapi import Depends, FastAPI, Query
from typing import Annotated

app = FastAPI()

# Fix will remove the parameter default value
@app.get("/items/")
async def read_items(commons: Annotated[dict, Depends(common_parameters)]):
    return commons

# Fix will delete comment and change default parameter value
@app.get("/items/")
async def read_items_1(q: Annotated[str, Query()] = "rick"):
    return q

Test Plan

N/A, no functionality/tests affected

[github-actions]

ruff-ecosystem results

Linter (stable)

✅ ecosystem check detected no linter changes.

Linter (preview)

✅ ecosystem check detected no linter changes.

[dylwil3]

Thank you!